Less than one month after the announcement she would be participating on the season finale of Fox’s “So You Think You Can Dance,” details of Katie Holmes’ scheduled performance were finally revealed last night. According to the 30 year-old Mrs Tom Cruise, she’ll be hitting the TV stage to perform a “song-and-dance homage to Judy Garland,” choreographed by her friend and ‘SYTYCD’ regular Tyce Diorio. Also revealed was why Holmes decided to make the apparently retrograde leap from big-screen to small: The recital is designed to bring awareness to her Dizzy Feet charity.

Established earlier this year by Holmes, “SYTYCD” judges Nigel Lythgoe and Carrie Ann Inaba and director/choreographer Adam Shankman, “Dizzy Feet” grants dance scholarships to “taleneted dancers, choreographers and teachers” (ranging from $1,500 to $7,500 annually) in addition to creating accreditation programs for dance schools across the country. “I like to sing and dance, so this has been really fun,” Holmes told show host Cat Deeley last night. “I think it’s important to let kids experience music and dancing and singing and the arts and also sports.”

“This is the next generation,” she adds, “and I think it’s important to give them every opportunity to grow and discover what it is that they like.”

The season finale of “So You Think You Can Dance” (also the show’s 100th episode) airs July 23rd.